| /* |
| * arch/arm/mach-ep93xx/vision_ep9307.c |
| * Vision Engraving Systems EP9307 SoM support. |
| * |
| * Copyright (C) 2008-2011 Vision Engraving Systems |
| * H Hartley Sweeten <hsweeten@visionengravers.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or (at |
| * your option) any later version. |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/irq.h> |
| #include <linux/gpio.h> |
| #include <linux/fb.h> |
| #include <linux/io.h> |
| #include <linux/mtd/partitions.h> |
| #include <linux/i2c.h> |
| #include <linux/platform_data/pca953x.h> |
| #include <linux/spi/spi.h> |
| #include <linux/spi/flash.h> |
| #include <linux/spi/mmc_spi.h> |
| #include <linux/mmc/host.h> |
| |
| #include <sound/cs4271.h> |
| |
| #include <mach/hardware.h> |
| #include <linux/platform_data/video-ep93xx.h> |
| #include <linux/platform_data/spi-ep93xx.h> |
| #include <mach/gpio-ep93xx.h> |
| |
| #include <asm/mach-types.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/arch.h> |
| |
| #include "soc.h" |
| |
| /************************************************************************* |
| * Static I/O mappings for the FPGA |
| *************************************************************************/ |
| #define VISION_PHYS_BASE EP93XX_CS7_PHYS_BASE |
| #define VISION_VIRT_BASE 0xfebff000 |
| |
| static struct map_desc vision_io_desc[] __initdata = { |
| { |
| .virtual = VISION_VIRT_BASE, |
| .pfn = __phys_to_pfn(VISION_PHYS_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, |
| }; |
| |
| static void __init vision_map_io(void) |
| { |
| ep93xx_map_io(); |
| |
| iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc)); |
| } |
| |
| /************************************************************************* |
| * Ethernet |
| *************************************************************************/ |
| static struct ep93xx_eth_data vision_eth_data __initdata = { |
| .phy_id = 1, |
| }; |
| |
| /************************************************************************* |
| * Framebuffer |
| *************************************************************************/ |
| #define VISION_LCD_ENABLE EP93XX_GPIO_LINE_EGPIO1 |
| |
| static int vision_lcd_setup(struct platform_device *pdev) |
| { |
| int err; |
| |
| err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH, |
| dev_name(&pdev->dev)); |
| if (err) |
| return err; |
| |
| ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS | |
| EP93XX_SYSCON_DEVCFG_RASONP3 | |
| EP93XX_SYSCON_DEVCFG_EXVC); |
| |
| return 0; |
| } |
| |
| static void vision_lcd_teardown(struct platform_device *pdev) |
| { |
| gpio_free(VISION_LCD_ENABLE); |
| } |
| |
| static void vision_lcd_blank(int blank_mode, struct fb_info *info) |
| { |
| if (blank_mode) |
| gpio_set_value(VISION_LCD_ENABLE, 0); |
| else |
| gpio_set_value(VISION_LCD_ENABLE, 1); |
| } |
| |
| static struct ep93xxfb_mach_info ep93xxfb_info __initdata = { |
| .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING, |
| .setup = vision_lcd_setup, |
| .teardown = vision_lcd_teardown, |
| .blank = vision_lcd_blank, |
| }; |
| |
| |
| /************************************************************************* |
| * GPIO Expanders |
| *************************************************************************/ |
| #define PCA9539_74_GPIO_BASE (EP93XX_GPIO_LINE_MAX + 1) |
| #define PCA9539_75_GPIO_BASE (PCA9539_74_GPIO_BASE + 16) |
| #define PCA9539_76_GPIO_BASE (PCA9539_75_GPIO_BASE + 16) |
| #define PCA9539_77_GPIO_BASE (PCA9539_76_GPIO_BASE + 16) |
| |
| static struct pca953x_platform_data pca953x_74_gpio_data = { |
| .gpio_base = PCA9539_74_GPIO_BASE, |
| .irq_base = EP93XX_BOARD_IRQ(0), |
| }; |
| |
| static struct pca953x_platform_data pca953x_75_gpio_data = { |
| .gpio_base = PCA9539_75_GPIO_BASE, |
| .irq_base = -1, |
| }; |
| |
| static struct pca953x_platform_data pca953x_76_gpio_data = { |
| .gpio_base = PCA9539_76_GPIO_BASE, |
| .irq_base = -1, |
| }; |
| |
| static struct pca953x_platform_data pca953x_77_gpio_data = { |
| .gpio_base = PCA9539_77_GPIO_BASE, |
| .irq_base = -1, |
| }; |
| |
| /************************************************************************* |
| * I2C Bus |
| *************************************************************************/ |
| |
| static struct i2c_board_info vision_i2c_info[] __initdata = { |
| { |
| I2C_BOARD_INFO("isl1208", 0x6f), |
| .irq = IRQ_EP93XX_EXT1, |
| }, { |
| I2C_BOARD_INFO("pca9539", 0x74), |
| .platform_data = &pca953x_74_gpio_data, |
| }, { |
| I2C_BOARD_INFO("pca9539", 0x75), |
| .platform_data = &pca953x_75_gpio_data, |
| }, { |
| I2C_BOARD_INFO("pca9539", 0x76), |
| .platform_data = &pca953x_76_gpio_data, |
| }, { |
| I2C_BOARD_INFO("pca9539", 0x77), |
| .platform_data = &pca953x_77_gpio_data, |
| }, |
| }; |
| |
| /************************************************************************* |
| * SPI CS4271 Audio Codec |
| *************************************************************************/ |
| static struct cs4271_platform_data vision_cs4271_data = { |
| .gpio_nreset = EP93XX_GPIO_LINE_H(2), |
| }; |
| |
| /************************************************************************* |
| * SPI Flash |
| *************************************************************************/ |
| static struct mtd_partition vision_spi_flash_partitions[] = { |
| { |
| .name = "SPI bootstrap", |
| .offset = 0, |
| .size = SZ_4K, |
| }, { |
| .name = "Bootstrap config", |
| .offset = MTDPART_OFS_APPEND, |
| .size = SZ_4K, |
| }, { |
| .name = "System config", |
| .offset = MTDPART_OFS_APPEND, |
| .size = MTDPART_SIZ_FULL, |
| }, |
| }; |
| |
| static struct flash_platform_data vision_spi_flash_data = { |
| .name = "SPI Flash", |
| .parts = vision_spi_flash_partitions, |
| .nr_parts = ARRAY_SIZE(vision_spi_flash_partitions), |
| }; |
| |
| /************************************************************************* |
| * SPI SD/MMC host |
| *************************************************************************/ |
| static struct mmc_spi_platform_data vision_spi_mmc_data = { |
| .detect_delay = 100, |
| .powerup_msecs = 100, |
| .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, |
| .flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO, |
| .cd_gpio = EP93XX_GPIO_LINE_EGPIO15, |
| .cd_debounce = 1, |
| .ro_gpio = EP93XX_GPIO_LINE_F(0), |
| .caps2 = MMC_CAP2_RO_ACTIVE_HIGH, |
| }; |
| |
| /************************************************************************* |
| * SPI Bus |
| *************************************************************************/ |
| static struct spi_board_info vision_spi_board_info[] __initdata = { |
| { |
| .modalias = "cs4271", |
| .platform_data = &vision_cs4271_data, |
| .max_speed_hz = 6000000, |
| .bus_num = 0, |
| .chip_select = 0, |
| .mode = SPI_MODE_3, |
| }, { |
| .modalias = "sst25l", |
| .platform_data = &vision_spi_flash_data, |
| .max_speed_hz = 20000000, |
| .bus_num = 0, |
| .chip_select = 1, |
| .mode = SPI_MODE_3, |
| }, { |
| .modalias = "mmc_spi", |
| .platform_data = &vision_spi_mmc_data, |
| .max_speed_hz = 20000000, |
| .bus_num = 0, |
| .chip_select = 2, |
| .mode = SPI_MODE_3, |
| }, |
| }; |
| |
| static int vision_spi_chipselects[] __initdata = { |
| EP93XX_GPIO_LINE_EGPIO6, |
| EP93XX_GPIO_LINE_EGPIO7, |
| EP93XX_GPIO_LINE_G(2), |
| }; |
| |
| static struct ep93xx_spi_info vision_spi_master __initdata = { |
| .chipselect = vision_spi_chipselects, |
| .num_chipselect = ARRAY_SIZE(vision_spi_chipselects), |
| .use_dma = 1, |
| }; |
| |
| /************************************************************************* |
| * I2S Audio |
| *************************************************************************/ |
| static struct platform_device vision_audio_device = { |
| .name = "edb93xx-audio", |
| .id = -1, |
| }; |
| |
| static void __init vision_register_i2s(void) |
| { |
| ep93xx_register_i2s(); |
| platform_device_register(&vision_audio_device); |
| } |
| |
| /************************************************************************* |
| * Machine Initialization |
| *************************************************************************/ |
| static void __init vision_init_machine(void) |
| { |
| ep93xx_init_devices(); |
| ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M); |
| ep93xx_register_eth(&vision_eth_data, 1); |
| ep93xx_register_fb(&ep93xxfb_info); |
| ep93xx_register_pwm(1, 0); |
| |
| /* |
| * Request the gpio expander's interrupt gpio line now to prevent |
| * the kernel from doing a WARN in gpiolib:gpio_ensure_requested(). |
| */ |
| if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN, |
| "pca9539:74")) |
| pr_warn("cannot request interrupt gpio for pca9539:74\n"); |
| |
| vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7)); |
| |
| ep93xx_register_i2c(vision_i2c_info, |
| ARRAY_SIZE(vision_i2c_info)); |
| ep93xx_register_spi(&vision_spi_master, vision_spi_board_info, |
| ARRAY_SIZE(vision_spi_board_info)); |
| vision_register_i2s(); |
| } |
| |
| MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307") |
| /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ |
| .atag_offset = 0x100, |
| .map_io = vision_map_io, |
| .init_irq = ep93xx_init_irq, |
| .init_time = ep93xx_timer_init, |
| .init_machine = vision_init_machine, |
| .init_late = ep93xx_init_late, |
| .restart = ep93xx_restart, |
| MACHINE_END |